6488865653 has 2 divisors, whose sum is σ = 6488865654. Its totient is φ = 6488865652.

The previous prime is 6488865601. The next prime is 6488865673. The reversal of 6488865653 is 3565688846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4580311684 + 1908553969 = 67678^2 + 43687^2 .

It is a cyclic number.

It is not a de Polignac number, because 6488865653 - 2⁶ = 6488865589 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6488865592 and 6488865601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6488865673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3244432826 + 3244432827.

It is an arithmetic number, because the mean of its divisors is an integer number (3244432827).

Almost surely, 2^6488865653 is an apocalyptic number.

It is an amenable number.

6488865653 is a deficient number, since it is larger than the sum of its proper divisors (1).

6488865653 is an equidigital number, since it uses as much as digits as its factorization.

6488865653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33177600, while the sum is 59.

The square root of 6488865653 is about 80553.4955976462. The cubic root of 6488865653 is about 1865.1893520775.

The spelling of 6488865653 in words is "six billion, four hundred eighty-eight million, eight hundred sixty-five thousand, six hundred fifty-three".